Ever since I learned about the nuclear arms race at age fourteen, I’ve been concerned that the power of our technology was growing faster than the wisdom with which we manage it. I therefore decided to sneak a chapter about this challenge into my first book, Our Mathematical Universe, even though the rest of it was primarily about physics. I made a New Year’s resolution for 2014 that I was no longer allowed to complain about anything without putting some serious thought into what I could personally do about it, and I kept my pledge during my book tour that January: Meia and I did lots of
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